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From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH 0/3] Receive Side Coalescing for macb driver
Date: Tue, 17 Apr 2018 09:53:32 -0400 (EDT)
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From: Rafal Ozieblo <rafalo@cadence.com>
Date: Tue, 17 Apr 2018 08:59:35 +0000

> If IP supports RSC and skb has 2B reserved for alignment we end up
> with none packets receive correctly (2B missing in the each skb).
> We can either leave few customers without support in Linux driver or
> let them use the driver with decrease performance.

You probably want to find a way to memmove() the headers to be aligned
in this case, and then point the data afterwards into SKB page frags.